1. The formula for the volume of a cylinder is V = πr^2h. Rearrange the formula for r, in terms of h and V.

2. The formula for the area of a trapezoid is A = 1/2h(b1 + b2). Rearrange the formula for b1 in terms of A, h, and b2 .

thats not a system of equations, that is a solution

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

if im not mistaking its

step-by-step explanation: